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碳酸盐沉积物记录了地球的口/span>气候信?/span>+/span>所含的碲/span>和氧皃/span>同位素比率揭示了碳酸盏/span>形成时期皃/span>气倘/span>环境咋/span>碳循?/span>信息、/span>以前对碳酸盐中碳氧同位素皃/span>测定只能使用昂贵皃/span>质谱仪,且需要严栻/span>的专业人员来操作咋/span>维护,后期投?/span>较高、/span>
本款碳酸盐碳?/span>同位素分析仪极大的简化了碳酸盏/span>碲/span>?/span>同位紟/span>的测宙/span>,无需专业人员操作+/span>乞/span>无需昂贵的耗材+/span>佅/span>性能媲美IRMS。本欽/span>碳酸盐碳?/span>同位素分析仪基于第五仢/span>光腔衰荡光谱技?/span>测量样品氓/span>?/span>CO2浓度叉/span>其同位素比率+/span>精度完全满足碳酸盐研究的需求、/span>
技术原琅/span>
第五仢/span>光腔衰荡光谱技?/span>
主要特点
l 测量腔室体积9span>30mL
l18O-CO2精度;/span>0.098‰;13C-CO2精度;/span>0.049?/span>
l具有IRMS无法比拟皃/span>小额前期投入咋/span>运行费用
l架设简協/span>,操佛/span>方便
l极高的可靠性和更长皃/span>无故際/span>运行时间
性能指标
性能指标 |
|
18O-CO2< 0.098 ?/span> 13C-CO2< 0.049?/span> |
|
确保**漂移@STP?0000ppm CO2 N2作为载气(24 hrs??/span>倻/span>? hr.平均) |
18O-CO2<1.0?/span> 13C-CO2< 0.5 ?/span> |
CO2动态量稊/span> |
确保范围9/span>1-5% (10000-50000 ppm) 操作范围9/span>0.4-10%(2000-100000 ppm) 1 mg纯CaCO3酸化名/span>产品的气体稀釉/span>?/span>20ml N2?/span>能产甞/span>1.1%皃/span>CO2浓度 |
浓度依赖?/span> |
18O-CO2?#948;13C-CO2:确俜/span>< 0.10 (%CO2) |
环境温度依赖?/span> |
18O-CO29/span>确保< 0.1 ?℃,典型< 0.05 ?ℂ/span> 13C-CO29/span>确保< 0.06 ?℃,典型< 0.025 ?ℂ/span> |
测量间隔 |
~2 s |
响应时间?0-90%/90-10%(/span> |
典型~30 s |
注意事项 |
分析?/span>不测野/span>H2O,CH4或耄/span>其它分子、/span>而其宂/span>分子的存?/span>伙/span>导致测试结果不准确、/span>系统载气必须是高纯N2,其他载氓/span>如氩气,氦气或者空气会导致测试结果不准?/span>。请与我?/span>联系讨论具体的实验条仵/span>咋/span>方法+/span>以连接已有的或新皃/span>样品前处理系统、/span> |
取样温度 |
-10 ~ 50C |
温度控制精度 |
0.005ℂ/span> |
取样压力 |
300-1000Torr'/span>40-133kPa(/span> |
压力控制精度 |
0.0002atm |
取样流逞/span> |
?0sccm@760Torr 典型~50sccm |
栶/span>气湿?/span> |
样品必须干燥 |
抗震测试 |
MIL-DTD 810F 抗冲出/span>和抗震检浊/span> |
环境湿度 |
?9 % RH,无需冷凝 |
数据输出 |
RS232,USB+/span>模拟输出,网叢/span> |
里/span>野/span> |
26Kg(包括外置泵(/span> |
酌/span>仵/span> |
外置泵、键盘、鼠标、LCD显示器(可选) |
环境温度范围 |
10-35℃(操作)?0-50℃(存储(/span> |
?/span>夳/span> |
1/4接头套管 |
安装 |
台式或经典的框架安装 |
耖/span> |
100-240 VAC,启动时?50W;稳定后:分析仪125 W,泵35 W |
寷/span> |
分析仪:42x18x 45cm:/span> 外置泵:20x10x30cm |